Product Overview

The Epro PR6423/013-030 is an 8 mm eddy current sensor used for non-contact measurement of the relative position of conductive targets. It is intended for machinery monitoring applications where mechanical movement needs to be detected without direct contact between the sensing element and the monitored component.

The sensor can be installed near rotating shafts and other conductive machine targets to detect changes associated with radial or axial movement. This makes it suitable for equipment such as turbines, compressors, generators, pumps, and other rotating machinery where displacement and vibration monitoring are required.

The PR6423/013-030 normally forms part of a complete eddy current measurement chain. Its sensing signal is processed by compatible driver or signal-conditioning electronics before being transferred to a machinery monitoring or protection system.

For field service and commissioning, the mechanical relationship between the probe and target is particularly important. Probe mounting, target condition, sensing gap, cable integrity, and compatibility with the associated signal-conditioning electronics should be checked when establishing or troubleshooting the measurement channel.

Technical Specifications

Product Features

• 8 mm eddy current sensing head for non-contact measurement.
• Detects changes in the position of conductive machinery targets.
• Suitable for rotating shaft displacement and vibration monitoring.
• Can be integrated with compatible Epro signal-conditioning electronics.
• Suitable for continuous machinery condition-monitoring applications.
• Applicable to turbines, compressors, generators, pumps, and other rotating equipment.
• Useful as a sensing element in machinery protection and monitoring systems.

Working Principle

The PR6423/013-030 uses the eddy current principle to detect changes in the distance between the probe and a conductive target. The sensor generates an electromagnetic field at its sensing head, and the presence and position of the metallic target influence the electrical response of the sensing circuit.

When installed near a rotating shaft, changes in shaft position alter the probe-to-target gap. The associated driver electronics interpret these changes and produce a measurement signal that can be used by the machinery monitoring system.

Conductive Shaft / Target → PR6423/013-030 Sensor → Driver / Signal Conditioning → Machinery Monitoring System → Alarm / Protection

The sensor does not independently perform machine protection or vibration analysis. Its role is to provide the primary displacement-related sensing information to the downstream measurement system.

Role in a Machinery Monitoring Architecture

The PR6423/013-030 is positioned at the front end of the machinery monitoring channel, close to the conductive target being monitored.

Rotating Shaft → PR6423/013-030 → Signal Conditioner / Driver → Monitoring System → Alarm & Protection

The separation between sensing and monitoring electronics allows the probe, signal-conditioning stage, and monitoring system to be checked independently during commissioning and fault diagnosis.

Industrial Applications

Installation and Maintenance

1. Confirm that the PR6423/013-030 is suitable for the intended machinery monitoring channel.
2. Verify the compatible driver or signal-conditioning equipment before installation.
3. Mount the probe securely so that machine vibration cannot alter its position.
4. Position the sensor relative to the conductive target according to the applicable installation requirements.
5. Verify the probe-to-target sensing gap during commissioning.
6. Confirm that the monitored target provides an appropriate conductive surface.
7. Route the sensor cable to minimize mechanical stress, abrasion, and other installation hazards.
8. Inspect connectors and electrical interfaces before applying operating power.
9. Check the sensor measurement during commissioning for stable and repeatable behavior.
10. Inspect probe mounting and target clearance if the signal becomes unstable.
11. Check the cable, connectors, and associated driver if the measurement signal is missing or abnormal.
12. After replacing the sensor, verify the complete measurement channel before returning the machinery monitoring system to service.

Compatible System Components

Recommended Related Models

Key Advantages

• Provides non-contact sensing for conductive rotating machinery targets.
• 8 mm sensing head is suitable for compact machinery measurement locations.
• Supports shaft displacement and vibration-related monitoring.
• Can be integrated with compatible Epro signal-conditioning electronics.
• Suitable for turbines, compressors, generators, pumps, and other rotating equipment.
• Allows the sensing stage to be diagnosed separately from downstream monitoring electronics.

Technical FAQs

What type of target can the PR6423/013-030 detect?

The sensor is intended for conductive targets, such as metallic rotating shafts. The target material, surface condition, geometry, and probe positioning can affect the resulting eddy current measurement.

How does probe mounting affect measurement stability?

The probe must remain mechanically stable relative to the monitored target. If the sensor itself moves because of loose mounting or excessive vibration, the monitoring system may interpret that movement as a change in shaft position.

What should be checked when the PR6423/013-030 produces no usable measurement?

Check the sensor mounting and sensing gap first, followed by the cable, connectors, compatible driver or signal-conditioning electronics, and downstream monitoring input. This helps distinguish a sensor installation problem from an electrical or monitoring-system fault.

Can the PR6423/013-030 be used as a complete machinery protection system?

No. The PR6423/013-030 is the sensing element within the measurement chain. A compatible signal-conditioning stage and machinery monitoring or protection system are required to process the measurement and perform configured alarm or protective functions.